What is the ratio when you mix 60 mil of oil to 4 liters of fuel?

To find the ratio of oil to fuel, first convert 4 liters of fuel to milliliters, which is 4000 ml. The ratio of oil (60 ml) to fuel (4000 ml) can be simplified by dividing both amounts by 60, resulting in a ratio of 1:66.67. Therefore, the final ratio of oil to fuel is 1:66.67.